<template>
  <!-- 容器 -->
  <el-container class="el-home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" />
        <span>电商后台管理系统</span>
      </div>
      <div>
        <el-button type="info" @click="logout">退出</el-button>
      </div>
    </el-header>
    <el-container>
      <!-- 左侧 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-btn" @click="toggleCollapse">
          <span>|||</span>
        </div>
        <el-menu :default-active="activePath" router unique-opened background-color="#333744" text-color="#fff" active-text-color="#409eff" :collapse="isCollapse" :collapse-transition="false">
          <!--一级菜单-->
          <el-submenu :index="item.id.toString()" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item @click="saveNavState('/' + subItem.path)" :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--右侧-->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data () {
    return {
      menuList: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data } = await this.$http.get('menus')
      if (data.meta.status !== 200) {
        this.$message.error(data.meta.msg)
        return
      }
      this.menuList = data.data
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.el-home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  > div {
    display: flex;
    justify-content: center;
    align-items: center;
    > span {
      color: #fff;
      font-size: 20px;
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  >.toggle-btn{
    background-color: #4a5064;
    color: #fff;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
  }
  .el-menu{
    border-right: none;
}
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
</style>
